Software Engineer, Agent

Salary: $211,000 - 251,000 per year Requirements: Experience building and scaling end-to-end production systems. Strong analytical and problem-solving ability, especially in fast-moving and uncertain environments. A hands-on builder mindset with strong initiative and a willingness to find creative ways to ship. Comfort working directly with customers to understand their needs and address real-world challenges. Excellent communication skills, with the ability to be clear, direct, and persuasive with both technical and non-technical audiences. Preferred: experience building or deploying AI/LLM systems in production. Preferred: founder or founding engineer experience, with an understanding of balancing quality, ownership, and speed. Preferred: familiarity with evaluation frameworks, agent tooling, RAG pipelines, and prompt engineering. Preferred: experience with React, TypeScript, and/or Go. Preferred: background in customer-facing roles or leading technical projects with external stakeholders. Responsibilities: Design and deliver production-grade AI agents that are reliable, high-performing, intuitive, and central to our revenue growth. Own the full Agent Development Life Cycle, from initial pilot through deployment and ongoing refinement. Build, tune, and evolve AI agents in live production settings while helping define best practices for ADLC. Work directly with leaders at large enterprises to understand business challenges and create AI agents that improve operations at scale. Partner with innovative startups to embed AI agents across their business stack and accelerate innovation and efficiency. Use customer feedback to inform the evolution of our core platform. Identify unmet customer needs, prototype new tools and features, and collaborate with research, product, and platform teams to shape the future of AI agent development. Contribute to example work such as churn-reduction agents, customer troubleshooting and recommendation agents, industry-specific frameworks, new agent architectures, self-service features, generative agent development, and large-scale voice model integration. Technologies: AI AI Agents Support LLM RAG React TypeScript CTO Salesforce VR More: We are Sierra, building a platform that helps businesses create more human customer experiences with AI. We are primarily an in-person company based in San Francisco, with growing offices in Atlanta, New York, London, Paris, Madrid, Munich, Singapore, Japan, and Sydney. Our culture is guided by Trust, Customer Obsession, Craftsmanship, Intensity, and Family. Our co-founders are Bret Taylor and Clay Bavor, and we offer a full-time benefits package that includes flexible unlimited PTO, medical, dental, and vision coverage for employees and their families, life and disability insurance, a retirement plan depending on country of employment, parental leave, fertility and family-building support, lunch plus snacks and coffee, a discretionary stipend, and free alphorn lessons. We also support equity participation for eligible full-time employees, subject to plan terms and policies. We value diversity and encourage candidates to apply even if their background does not match the description exactly. last updated 36 week of 2026